CN108149122A - A kind of preparation method of silver-base alloy contact material - Google Patents
A kind of preparation method of silver-base alloy contact material Download PDFInfo
- Publication number
- CN108149122A CN108149122A CN201711445714.3A CN201711445714A CN108149122A CN 108149122 A CN108149122 A CN 108149122A CN 201711445714 A CN201711445714 A CN 201711445714A CN 108149122 A CN108149122 A CN 108149122A
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- Prior art keywords
- powder
- silver
- parts
- contact material
- base alloy
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The present invention relates to a kind of preparation methods of silver-base alloy contact material, and silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide are proportionally mixed, then carry out melting under vacuum, and molten liquid is carried out atomization forms powder；Gained powder is fitted into progress internal oxidition processing in oxidation furnace, obtains the alloy powder of internal oxidition；The alloy powder of the internal oxidition is cold-pressed, high temperature sintering, multiple pressure, squeezes, drawing procedure, silver-base alloy contact material is made.The method of the present invention substantially reduces the heating time of material at high temperature, reduce the loss of ag material, pass through internal oxidition, oxidation phase disperse is made to be uniformly distributed in matrix phase, invigoration effect is played to alloy, meanwhile, the present invention passes through preferred raw material and proportioning, the oxidation of used raw material can mutually significantly improve the electric durability, resistance fusion welding and wear resistance of alloy material, can be preferably applied for field of electronic devices.
Description
Technical field
The present invention relates to alloy composite materials preparing technical field, especially a kind of preparation side of silver-base alloy contact material
Method.
Background technology
Contact material is a kind of basic industrial component having a large capacity and a wide range, and bears on-off electrical control circuit and load
The task of circuital current, material determine the connecting-disconnecting function of switch and the reliability of electrical contact.At present, in low-tension switch electric appliance
A kind of important slider material is silver-base alloy contact material, specifically includes silver-colored nickel, silver-colored tungsten, silver-colored tungsten carbide, silver-colored graphite etc..Silver is one
Kind rare precious metal, manufacturing process reach section silver for silver-based electric contact material have important economic implications and
Scientific value.
At present, the production of silver-base alloy contact material mainly has high temperature sintering and infiltration method, wherein, high-temperature sintering process be by
Several metal mixeds are uniform, later in reduction or the heating densification of vacuum atmosphere high temperature.Infiltration method is by addition to silver its
Its constituent element warp is molded without high temperature sintering, then melts silver, and silver-colored melt is made to penetrate into other constituent elements under high pressure or vacuum
In skeleton or powder, solidification later forms alloy contact material.But both processes will add for a long time at high temperature
Heat causes the volatilization loss of silver, also to pass through such as extruding of subsequent pressing process sometimes, rolling, wire drawing, beat bucker-ups
Sequence causes a large amount of clouts.The silver-based contact to complete will also use silver-based solder that can just be welded on copper pedestal, these processes
A large amount of noble silvers are consumed, cause greatly to waste.
Invention content
The purpose of the present invention is to provide a kind of preparation methods of silver-base alloy contact material, can save ag material, behaviour
Make simply, it is easy to implement, it is safe, suitable for on-line machining, the resistance fusion welding of electrical contact material is significantly improved, closes silver-based
Golden slider material is used to be maintained to its excellent performance during large capacity electrical contact material, is touched so as to expand silver-base alloy
The application range of point material, further improves properties of product.
The object of the invention to solve the technical problems is realized using following technical scheme.
The preparation method of a kind of silver-base alloy contact material proposed according to the present invention, includes the following steps：
(1) silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide are proportionally mixed, is then melted under vacuum
Molten liquid is carried out atomization and forms powder by refining；
(2) powder obtained by step (1) is fitted into progress internal oxidition processing in oxidation furnace, obtains the alloyed powder of internal oxidition
End；
(3) alloy powder of gained internal oxidition is cold-pressed, high temperature sintering, multiple pressure, squeezes, drawing procedure, silver is made
Based alloy slider material.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
A kind of preparation method of the preparation method of aforementioned silver-base alloy contact material, wherein, the silver powder, tungsten powder, nickel
Powder, copper powder, aluminium powder, titanium carbide parts by weight be：30-50 parts of silver powder, 10-20 parts of tungsten powder, 15-30 parts of nickel powder, copper powder 5-20
Part, 5-15 parts of aluminium powder, 20-30 parts of titanium carbide.
A kind of preparation method of the preparation method of aforementioned silver-base alloy contact material, wherein, step (1) described atomization
Cooldown rate is 105-106K/S。
A kind of preparation method of the preparation method of aforementioned silver-base alloy contact material, wherein, the temperature of the internal oxidition
It it is 700-800 DEG C, pressure during internal oxidition is 0.5-1MPa, and the time of internal oxidition is 30-60min.
A kind of preparation method of the preparation method of aforementioned silver-base alloy contact material, wherein, step (3) high temperature sintering
Temperature is 800-1000 DEG C, and the time of high temperature sintering is 40-90min.
A kind of preparation method of the preparation method of aforementioned silver-base alloy contact material, wherein, the silver powder, tungsten powder, nickel
Powder, copper powder, aluminium powder, titanium carbide parts by weight be：45 parts of silver powder, 14 parts of tungsten powder, 25 parts of nickel powder, 16 parts of copper powder, 8 parts of aluminium powder,
26 parts of titanium carbide.
The present invention has clear advantage and advantageous effect compared with prior art, by above-mentioned technical proposal, the present invention
A kind of preparation method of silver-base alloy contact material can reach comparable technological progress and practicability, and with wide in industry
General utility value at least has following advantages：
The method of the present invention substantially reduces the heating time of material at high temperature, reduces the loss of ag material, passes through
Internal oxidition makes oxidation phase disperse be uniformly distributed in matrix phase, and invigoration effect is played to alloy, meanwhile, the present invention is by preferred
Raw material and proportioning, the oxidations of used raw material can mutually significantly improve the electric durability of alloy material, resistance fusion welding and wear-resistant
Property, field of electronic devices can be preferably applied for.
Silver-base alloy contact material prepared by the present invention not only has excellent conduction, heat conductivility, and contact resistance is low
And stablize, the advantages of anti-electrical loss is strong, and significantly improve the resistance fusion welding of electrical contact material, make silver-base alloy contact material
Material during large capacity electrical contact material for being maintained to its excellent performance, so as to expand silver-base alloy contact material
Application range further improves properties of product.
In conclusion a kind of preparation method of silver-base alloy contact material of the present invention technically has significant progress, and
Really it is a new and innovative, progressive, practical new design with apparent good effect.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow the above and other objects, features and advantages of the present invention can
It is clearer and more comprehensible, special below to lift preferred embodiment, detailed description are as follows.
Specific embodiment
The technological means and effect taken further to illustrate the present invention to reach predetermined goal of the invention, below in conjunction with
Preferred embodiment, to the preparation method of a kind of silver-base alloy contact material proposed according to the present invention, specific embodiment, knot
Structure, feature and its effect are described in detail as after.
The preparation method of the present invention is as follows：
It is according to parts by weight by silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide：30-50 parts of silver powder, tungsten powder 10-
20 parts, 15-30 parts of nickel powder, 5-20 parts of copper powder, 5-15 parts of aluminium powder, the ratio mixing that 20-30 parts of titanium carbide, then 6 × 10-3
Vacuum degree under carry out melting, molten liquid is carried out atomization after melting forms powder, and the cooldown rate of atomization is 105-106K/
S；Gained powder is fitted into oxidation furnace at 700-800 DEG C, pressure is to carry out internal oxidition under 0.5-1MPa to handle 30-60min,
Obtain the alloy powder of internal oxidition；The alloy powder of gained internal oxidition is cold-pressed, high temperature sintering, multiple pressure, is squeezed, drawer
Silver-base alloy contact material is made in sequence.
Preferably, the temperature of above-mentioned high temperature sintering is 800-1000 DEG C, the time of high temperature sintering is 40-90min.
Preferably, the silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide parts by weight be：45 parts of silver powder, tungsten powder
14 parts, 25 parts of nickel powder, 16 parts of copper powder, 8 parts of aluminium powder, 26 parts of titanium carbide.
Embodiment 1
It is according to parts by weight by silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide：30 parts of silver powder, 15 parts of tungsten powder, nickel
15 parts of powder, 20 parts of copper powder, 5 parts of aluminium powder, the ratio mixing that 25 parts of titanium carbide, then 6 × 10-3Vacuum degree under carry out melting,
Molten liquid is subjected to atomization after melting and forms powder, the cooldown rate of atomization is 105K/S；Gained powder is packed into and is aoxidized
At 800 DEG C in stove, pressure is to carry out internal oxidition under 0.8MPa to handle 50min, obtains the alloy powder of internal oxidition；By oxygen in gained
The alloy powder of change is cold-pressed, 800 DEG C of high temperature sintering 90min, multiple pressure, squeezes, drawing procedure, silver-base alloy contact material is made
Material.
Embodiment 2
It is according to parts by weight by silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide：50 parts of silver powder, 20 parts of tungsten powder, nickel
30 parts of powder, 5 parts of copper powder, 15 parts of aluminium powder, the ratio mixing that 30 parts of titanium carbide, then 6 × 10-3Vacuum degree under carry out melting,
Molten liquid is subjected to atomization after melting and forms powder, the cooldown rate of atomization is 106K/S；Gained powder is packed into and is aoxidized
At 700 DEG C in stove, pressure is to carry out internal oxidition under 0.5MPa to handle 60min, obtains the alloy powder of internal oxidition；By oxygen in gained
The alloy powder of change is cold-pressed, 1000 DEG C of high temperature sintering 40min, multiple pressure, squeezes, drawing procedure, silver-base alloy contact is made
Material.
Embodiment 3
It is according to parts by weight by silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide：45 parts of silver powder, 14 parts of tungsten powder, nickel
25 parts of powder, 16 parts of copper powder, 8 parts of aluminium powder, the ratio mixing that 26 parts of titanium carbide, then 6 × 10-3Vacuum degree under carry out melting,
Molten liquid is subjected to atomization after melting and forms powder, the cooldown rate of atomization is 105K/S；Gained powder is packed into and is aoxidized
At 760 DEG C in stove, pressure is to carry out internal oxidition under 1MPa to handle 30min, obtains the alloy powder of internal oxidition；By gained internal oxidition
Alloy powder be cold-pressed, 900 DEG C of high temperature sintering 60min, multiple pressure, squeeze, drawing procedure, silver-base alloy contact material be made
Material.
It is tested by actual effect, the performance of embodiment 3 is more excellent, is applied to have during large capacity electrical contact material
Better resistance fusion welding energy, service life are also longer compared with other embodiments.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, though
So the present invention is disclosed above with preferred embodiment, however is not limited to the present invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, technical spirit according to the present invention
To any simple modification, equivalent change and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (6)
1. a kind of preparation method of silver-base alloy contact material, it is characterised in that it includes the following steps：
(1) silver powder, tungsten powder, nickel powder, copper powder, aluminium powder, titanium carbide are proportionally mixed, then carries out melting under vacuum, it will
Molten liquid carries out atomization and forms powder；
(2) powder obtained by step (1) is fitted into progress internal oxidition processing in oxidation furnace, obtains the alloy powder of internal oxidition；
(3) alloy powder of gained internal oxidition is cold-pressed, high temperature sintering, multiple pressure, squeezes, drawing procedure, silver-based conjunction is made
Golden slider material.
2. the preparation method of silver-base alloy contact material as described in claim 1, it is characterised in that the silver powder, tungsten powder, nickel
Powder, copper powder, aluminium powder, titanium carbide parts by weight be：30-50 parts of silver powder, 10-20 parts of tungsten powder, 15-30 parts of nickel powder, copper powder 5-20
Part, 5-15 parts of aluminium powder, 20-30 parts of titanium carbide.
3. the preparation method of silver-base alloy contact material as described in claim 1, it is characterised in that step (1) described atomization
Cooldown rate is 105-106K/S。
4. the preparation method of silver-base alloy contact material as described in claim 1, it is characterised in that the temperature of the internal oxidition
It it is 700-800 DEG C, pressure during internal oxidition is 0.5-1MPa, and the time of internal oxidition is 30-60min.
5. the preparation method of silver-base alloy contact material as described in claim 1, it is characterised in that step (3) high temperature sintering
Temperature is 800-1000 DEG C, and the time of high temperature sintering is 40-90min.
6. the preparation method of silver-base alloy contact material as described in claim 1, it is characterised in that the silver powder, tungsten powder, nickel
Powder, copper powder, aluminium powder, titanium carbide parts by weight be：45 parts of silver powder, 14 parts of tungsten powder, 25 parts of nickel powder, 16 parts of copper powder, 8 parts of aluminium powder,
26 parts of titanium carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711445714.3A CN108149122A (en) | 2017-12-27 | 2017-12-27 | A kind of preparation method of silver-base alloy contact material |
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| CN201711445714.3A CN108149122A (en) | 2017-12-27 | 2017-12-27 | A kind of preparation method of silver-base alloy contact material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113345725A (en) * | 2021-06-01 | 2021-09-03 | 宁波毅立电子有限公司 | Composite contact material and manufacturing method thereof |
| CN114262815A (en) * | 2021-02-01 | 2022-04-01 | 中南大学 | Silver-metal oxide composite material, preparation method thereof and application of silver-metal oxide composite material as electrical contact material |
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| CN114262815A (en) * | 2021-02-01 | 2022-04-01 | 中南大学 | Silver-metal oxide composite material, preparation method thereof and application of silver-metal oxide composite material as electrical contact material |
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| CN113345725A (en) * | 2021-06-01 | 2021-09-03 | 宁波毅立电子有限公司 | Composite contact material and manufacturing method thereof |
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